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Zero gravity does not exist. It is a term used to describe what is better labelled 'micro gravity' - the state of experiencing no apparent gravitational effects.
During free-fall, you experience something akin to micro gravity; you are subject to acceleration under the influence of gravity, but only the apparently up-rushing air provides a clue. Sealing yourself into an un-powered vessel or container before being dropped would give the game away quite quickly; as the container reaches its terminal velocity (when its air resistance, which quadruples when velocity doubles, reaches an equilibrium with gravitational acceleration) and you find yourself standing on its inner surface. As you are not subject to air resistance within the container, your body will attempt to continue accelerating while the container will not, and you will be pressed against its floor.
Micro-gravity can be simulated in an aircraft; flying in a specific arc under power allows the craft to maintain downward acceleration at a rate equivalent to gravitational acceleration for a short time, and its passengers experience free-fall within the confines of the craft without air resistance.
In a free-fall orbit, you also experience no apparent gravitational force. In fact, you are falling toward the Earth (or whichever planet you're orbiting), but with appropriate initial acceleration in the right direction, the arc described by your fall matches the curvature of the Earth - the ground falls away as quickly as you fall towards it and you appear to have no weight.
If you should find yourself stranded in space, many parsecs from any substantial body or mass, you would also experience micro-gravity; you are still subject to the forces of gravity exerted upon you by all the mass in the universe and could actually be accelerating in the direction of the greatest gravitational force. As the force of gravity falls off at a rate equivalent to the inverse square of the distance from the center of mass, forever dividing over distance (therefore always measurable as a non-zero number), anything that is visible and much that is invisible in the night sky is actually exerting its gravitational force upon you, and you are exerting your own gravitational force upon the universe.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoZero gravity means no gravity; no force is pulling things in a downward direction, so everything is free to float away. This is not a situation which arises on the Earth, but zero gravity can exist in outer space. If you are in orbit around a planet such as the Earth, you are still within the Earth's gravitational field but the orbital motion effectively cancels it, alternatively, you could be in deep space, away from any major gravitational field.
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How much zero gravity is there in space?
Zero! that's why it is called zero gravity!
Why is acceleration due to gravity zero at the centre of the Earth?
Acceleration due to the earth's gravity is zero at the center of the Earth because at that point the mass of the earth is equally distributed in all directions, so pulling equally in all directions for a net zero pull. Simplistically, acceleration due to gravity decreases as distance from the center decreases. At the center the distance is zero, hence gravity is zero.
IS velocity possible in zero gravity?
Velocity is relative to the observer and or objects that are in the area , if your sitting in true zero gravity from your point of view you will be standing still but in-reality your velocity will based on your original thrust. Some one watching you (at a zero velocity) from another location might see you zoom by at the original velocity. So the new question is if that other person has zero velocity and is in zero gravity what time will it be when they look at their watch ? Hmmm
Why isn't an astronaut in our solar system in zero gravity?
An astronaut can never be in zero gravity in our solar system, because there is gravity (usually) from the Earth, and always from the Sun. It is important to distinguish weightlessness from zero gravity. Weightlessness occurs in a gravity environment in which the person is freefalling, hopefully in orbit. In a freefall condition, there is no friction to retard your fall, so you feel nothing pressing against you, and thus you feel weightless..When in orbit around the Earth, an astronaut is in freefall, and is therefore weightless, but there is still gravity. When travelling between the Earth to the Moon, the astronaut is still in orbit around the Sun, and is therefore freefalling weightlessly.
Why their is a zero gravity in moon?
There is not zero gravity on the moon. Any object with mass has gravity (even a cotton ball). However, the more dense and more massive an object, the larger its gravitational pull. This is why, even though a tennis ball does have gravity, it has no effect in relation to the gravity of the Earth. The Moon has something like 1/6th of the Earth's, so if you weighed sixty pounds on Earth (eat something!) you would only weigh 10 on the Moon.
How much zero gravity is there in space?
Zero! that's why it is called zero gravity!
Which is more like sky zone or zero gravity?
zero gravity
When did you say that the zero gravity is no gravity?
Depends on the atmosphere. location, place, space and time of zero gravity
Is zero gravity possible?
It's possible. There is a zero gravity area in the sea.
What does the term zero gravity mean?
No Gravity.
Is there zero gravity at the center of the earth?
Yes; the gravity from different sides should cancel, for a net result of zero gravity.
When was Zero Gravity Amusement Park created?
Zero Gravity Amusement Park was created in 1992.
When was Zero Gravity Research Facility created?
Zero Gravity Research Facility was created in 1966.
When was Zero Gravity - song - created?
Zero Gravity - song - was created on 2012-03-20.
Where is the closest zero gravity place?
There is no "zero gravity" place. Gravity permeates all the universe. Astronauts in orbit are often said to be in zero gravity but they are, in reality, on a position where their orbital velocity balances the attraction of the Earth.
Is there such a thing a zero gravity?
No. Gravity is a force with unlimited reach. Gravitys grip-force decreases with an increase in the distance between bodies. In a nutshell, there is no zero gravity, but there is very close to zero gravity. In the deep space between and at extreme distances from any galaxies we find what is effectively zero gravity.
What do scientist call when there is no gravity?
I THINK it is Zero-Gravity
